Atomizing spraying device



V. S. TlDD ET AL ATOMIZING SPRAYNG DEVICE Filed Jan. 6, 1956 rnej.

May 12, 1959 r www.,

2,886,251 Patented May 12,1953

ATOMIZING SPRAYING DEVICE Victor S. Titld, Lowell, Mich., and WilliamDickison,

Des Plaines, Ill., assignors to Root-Lowell Manufacturing Co., Lowell,Mich., a corporation of Ohio Application January 6, 1956, Serial No.557,700 2 Claims. (Cl. 239-342) The present invention relates' to anvatomizing sprayer of a relatively small rsize and of such construction,shape and dimensions that it may -be easily and readily stored when `notin use in a drawer or other convenient place, or it may be positioned onend 'and stored on a shelf, whereby to conserve space and without dangerof leakage in whatever position it may be stored.

Among the objects of the present invention is the provision of a sprayerassembly of small and compact construction whereby it may be easilycarried about and -made quickly available for use. In addition to itscompact construction, the present invention comprehends a novel meansand manner of sealing oi the supply or siphon tube when not in use andthereby effectively preventing leakage while the sprayer is being storedor carried about preparatory to use.

The present invention further comprehends a novel sprayer comprising apair of tubular or cylindrical members joined together` with thesemembers so arranged and spaced apart that the space therebetweenprovides a reservoir for a substantial `quantity of an insecticide orvother sprayable solution or fluid.

Another object of the present invention is the provision ofI a `novelmeans in the reservoir for catching and retaining a limited quantity ofthe sprayable solution for spraying when the sprayer is pointed ordirected upwardly.

A further object of the present invention is in the provision of a novelmeans for mounting and retaining the discharge end of the siphon oreduction tube in accurate alignment with the discharge orifice of thepump for optimum eliiciency in atomizing the insecticide or sprayablesolution.

Further objects are to provide a construction of maximumsimplicity,efliciency, economy and ease of assembly and operation, and such furtherobjects, advantages and capabilities as will later more fully appear andare inherently possessed thereby.

In the drawing:

Figure l is a lfragmentary view, part in side elevation and part invertical cross section, of the novel sprayer assembly and showing theposition of the plunger or piston at substantially its forward positionand the supply or eduction tube sealed to prevent siphoning of the spraysolution.

Fig. 2 is a view in front or end elevation of the spraying device.

Fig. 3 is a View in vertical cross section taken in a plane -representedby the line 3-3 of Fig. l and viewed in the direction of the arrows.

Fig. 4 is a fragmentary view, part in side elevation and part invertical cross section, of the forward end of the sprayer assembly withthe cut-olf screw retracted from sealing engagement with the dischargeend of the supply or eduction tube to permit siphoning of the spraysolution and operation of the sprayer.

Referring to the disclosure in the drawing and more particularly to theillustrative embodiment of the present invention, the novel atomizingsprayer comprises a pair of tubularor cylindrical members 10 and 11 heldin xed relation and sealed by a transverse partition or en'd wall 12 atthe rear of the outer member 10 and by' a transverse partition or endwall 13 at the forward end of the inner member 11. As disclosed in Figs.rl and'V 4, the partition or end wall 13 is spacedk rearwardly orinwardly from the forward end of the outer cylinder 16 to provide anenclosure.

The 'longitudinally extending space 14 between ithe cylindrical ortubular members 10 and 11 provides 1a reservoir for receiving asubstantial quantity of' an 'insecticide, Vfungicidey or other sprayablesolution or'flud, the outer member 10 being provided with a filleropening having an internally threaded annular' insert I5 adapted to beclosed by a threaded filler c'ap 16 and sealing gasket detachablyreceived in the upstandingv 'ange 17 of the insert. ,f

Mounted for reciprocation in the 'inner cylinder or tubular member 11which forms the barrel of a pump is a cup-shaped plunger or piston 18 ofleather or other suitable exible material mounted on 'and carried by theinner or forward end of a plunger rod 19 slidably received andrelatively loosely projecting through an opening in a pump plug 20 atthe rear of the pump barrel or cylinder 11 for the admission of 'airvabout the plunger rod into the barrel or cylinder. A handle or knob 21is provided vto reciprocate the plunger.

At. the lforward end ofy the pump barrel or 'cylinder 11 and adjacentthe partition 13'i's provided a pump cap 22 having an embossrnentprojecting into the enclosure 23 and in which cap is txedlyl but'eccentrically mounted a sleeve or nozzle 24 provided 'at its inner orrearrend with a reduction having a relatively small oriiice o'rdischargepassage 2S for 'the air'discharged under pressure from the forward endof the pump' barrel 11 and `opening into a relatively large dischargepassage or internal bore.'

The sleeve 24 provides a tube holder in which is xedly and securelymounted the upstanding or projecting discharge end 26 of a supply,eduction or Siphon tube 27 Iwhich projects through the transversepartition or end wall 13 and rearwardly into an elongated cup 28disposed within and open to the reservoir 14. This cup is mounted in theunderside of the sprayer or opposite to the ller opening and is ofsubstantial length and open to the reservoir 14 at its forward end 29and closed at its rear end 30 with the rear, open end 31 of the tube 27projecting to adjacent the closed end or bottom 30` of the cup 28 forsupplying or siphoning to the interior of the sleeve 24 spray solution/or lluid from the reservoir 14.

To prevent leakage of the spray solution or huid from the reservoir 14when the sprayer is not in operation or is being stored, there isprovided an adjustable screw 32 having its shank projecting through anopening in the circumferential wall of the outer cylinder 10 into theenclosure 23 and with the lower end 33 of this screw threaded into atapped openingin the sleeve or tube holder 24 in alignment with thedischarge end 26 of the supply or eductor tube 27. The lower end 33 ofthe screw 32 is hollow whereby to receive an insert 34 of a plasticcomposition having sealing characteristics whereby when the end 33 ofthe screw is projected or threaded downwardly by manipulating orrotating its knurled end 35, it receives the discharge end 26 of thesupply tube 27 (Fig. l) and this open end 26 is eifectively sealed andheld sealed against leakage until the operator again unscrews andwithdraws the end 33 of the screw sufficiently to fully uncover thedischarge end 26, whereupon operation of the pump by reciprocation ofthe pump or plunger rod 19 discharges a stream of air through the oriceor discharge passage 25 across the open end 26 of the tube 27 towithdraw or siphon spray solution from the reservoir and discharges thesolution with the air as an atomized or line spray.

The reservoir 14 is capable of receiving a substantial quantity of thespray solution which is free to continuously ow into the elongated cup28 when the sprayer is held in a. substantially horizontal plane ornormal voperating position. Thus the sprayer may be continu-`ouslyoperated so-long as spray solution remains in the reservoir. Y

. The location' and arrangement of the cup 28 is such as tocatchandretain a quantity of the spray solution for spraying in the event thesprayer is pointed or directed upwardly, at which time the main body ofthe spray solution, collects in the rear of the reservoir. When the4Supply in' the cup 28 is exhausted, a fresh supply is .readily madeavailable for spraying by merely tipping the sprayengwhereby the cup 28is again lled. -:Hav,ing thus disclosed the invention, we claim:

l;-1x. Ank atomizing sprayer consisting of a pair of concentriccylindrical members, the inner of which provides an enclosure bounded bythe forward partition and the open forward end of'the encompassingmember, a sleeve mounted at one end in said forward partition andprojecting forwardly therefrom and longitudinally of said concentriccylinders with its forward end disposed in s'aid enclosure but spacedrearwardly of the open end of the encompassing cylindrical member toprovide a vnozzle yhaving an orice at its inner end opening into thepump cylinder for the passage of airunder pressure from the pumpcylinder into the sleeve member and an asssesi Z enlarged bore at itsouter end for discharge of the atomized spray solution, an elongated cuprmember mounted in and open to the uid in the reservoir, a ysupply tubeprojecting through the forward partition with its discharge endprojecting radially through the wall of said sleeve member and into itsenlarged bore intermediate the ends of the sleeve member, and its otherend projecting into and terminating adjacent the bottom of the cup forreceiving and supplying spray solution into the enlarged bore of thesleeve member, whereby upon operation of the pump air under pressure isdischarged through said on'ce into said enlarged bore and the spraysolution is siphoned from the bottom of the cup through..

said supply tube.

2. An atomizing sprayer as set forth in claim l, including sealing meansfor sealingthe discharge end of the supply tube when the sprayer is notin use or being stored, said sealing means comprising a screw having itsouter end projecting through the wall of the encompassing cylindricalmember and its inner end projecting through and adjustably mounted inthe wall of the sleeve member in alignment with the discharge end of thesupply tube, the end of the screw being hollow and of substantiallygreater dimensions than the discharge end of the supply tube to receivetherein the latter, said hollow end provided with a sealing compositionto seal off the discharge end of the supply tube when the sprayer is notin use and the screw is adjusted to receive Within its hollow end thedischarge end of the supply tube.

.ReferencesgCited in the le of thispatent UNITED STATES PATENTS

